package map03;

import java.util.HashSet;

public class Demo01 {
    public static void main(String[] args) {
        Outer.Inner oi = new Son();//多态
        oi.method();

        HashSet<Outer.Inner> hs = new HashSet<Outer.Inner>();
        hs.add(new Son());//Outer.Inner引用指向一个Son类对象 多态


    }
}
